Brocade Communications Systems Layer 3 Routing Configuration ICX 6650 - Manual (Page 250)

232 Brocade ICX 6650 Layer 3 Routing Configuration Guide
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OSPF V3 configuration
• When assigned from the router interface requiring a logical connection, the neighbor router
field is the router ID (IPv4 address) of the router that is physically connected to the backbone.
When assigned from the router interface with the physical connection, the neighbor router is
the router ID (IPv4) address of the router requiring a logical connection to the backbone.
NOTE
By default, the Brocade router ID is the IPv4 address configured on the lowest numbered loopback
interface. If the Brocade device does not have a loopback interface, the default router ID is the
lowest numbered IPv4 address configured on the device.
NOTE
When you establish an area virtual link, you must configure it on both of the routers (both ends of
the virtual link).
For example, imagine that ABR1 in areas 1 and 2 is cut off from the backbone area (area 0). To
provide backbone access to ABR1, you can add a virtual link between ABR1 and ABR2 in area 1
using area 1 as a transit area. To configure the virtual link, you define the link on the router that is
at each end of the link. No configuration for the virtual link is required on the routers in the transit
area.
To define the virtual link on ABR1, enter the following command on ABR1.
Brocade(config-ospf6-router)#area 1 virtual-link 192.168.22.1
To define the virtual link on ABR2, enter the following command on ABR2.
Brocade(config-ospf6-router)#area 1 virtual-link 10.0.0.1
Syntax: area number | ipv4-address virtual-link router-id
The area number | ipv4-address parameter specifies the transit area.
The router-id parameter specifies the router ID of the OSPF router at the remote end of the virtual
link. To display the router ID on a router, enter the show ip command.
Assigning a virtual link source address
When routers at both ends of a virtual link need to communicate with one another, the source
address included in the packets must be a global IPv6 address. Therefore, you must determine the
global IPv6 address to be used by the routers for communication across the virtual link. You can
specify that a router uses the IPv6 global address assigned to one of its interfaces.
For example, to specify the global IPv6 address assigned to Ethernet interface 1/1/3 on ABR1 as
the source address for the virtual link on ABR1, enter the following command on ABR1.
Brocade(config-ospf6-router)#virtual-link-if-address interface ethernet 1/1/3
To specify the global IPv6 address assigned to tunnel interface 1 on ABR2 as the source address
for the virtual link on ABR2, enter the following command on ABR2.
Brocade(config-ospf6-router)#virtual-link-if-address interface tunnel 1
Syntax: virtual-link-if-address interface ethernet port | loopback number | tunnel number | ve
number